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31 Cards in this Set
- Front
- Back
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STEP-UP TRANSFORMER
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an electrical transformer that incresases the voltage of a power line.
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ELECTRIC FIELD
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an area surrounding an electron that exert a force on anything nearby with an electric charge
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OHM
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unit for measuring resistance
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POTENTIAL DIFFERENCE
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the difference in electric potential energy between 2 different points.
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STEP-DOWN-TRANSFORMER
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electrical transformer that decreases the voltage of a power line
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WET CELL
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power source that generates electric current by a chemical reaction using a liquid electrolyte
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INSULATOR
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a material that does not allow heat or electrons to move through it easily.
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WHAT IS POTENTIAL DIFFERENCE MEASURED IN?
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volts
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VOLTAGE
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difference in electrical potential.
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COULOMB
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the charge carried kby 6.24 billion billion electrons
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CIRCUIT
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a closed path through which electrons flow
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WHAT AND WITH WHAT IS VOLTAGE MEASURED IN
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volts, voltmeter
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PARALLEL CIRCUIT
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an electrical circuit where the current flows thrugh more than one path. If one path is interupted, current will still flow through the other paths.
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OHM'S LAW
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states that potential difference equals current multiflied by resistance
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GROUNDED
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electrically connected to earth, either directly or through a wire or other metal
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DRY CELL
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A power source that acts as an electron pump and generates electric current by a chemical reacion; uses thick, pasty electroyte.
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INDUCTION
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electrically charging an object or creating an electrical current in it, without physically touching it.
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WHERE IS THE ELECTRIC FIELD STRONGEST AND WEAKEST?
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strongest nearest the electron and weakens with distance
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KILOWATT HOUR
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the unit of electrical energy
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WHAT IS ELECTRICAL POWER MEASURED IN?
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watts or kilowatts
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CIRCUIT BREAKER
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device that protects an electrical circuit. If too much current flows. the device opens the cricuit and stops the circuit.
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ELECTRICAL POWER
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the rate at which electrical energy is converted to another form of energy,
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WHAT IS RESISTANCE MEASURED IN?
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ohm's
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STATIC ELECTRICITY
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the net buildup of electric charges on an object
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VOLT
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unit for measuring electrical potential energy
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ELECTROSCOPE
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A device containing 2 suspended metal leaves in a jar that move apart when charged; used to detect the presence of electric charges.
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CONDUCTOR
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A MATERIAL THAT ALLOWS ELECTRONS TO MOVE EASILY THROUGH IT.
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AMPERE
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unit of measuring current, the rate of flow of electrons in a circuit.
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SERIES CIRCUIT
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an electriacl circuit where the current has only 1 path. If the path is interupted in any point, it stops current flow in the entire circuit.
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CURRENT
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the flow of electrons through a wire or any conductor, measured in amperes with an ammmeter.
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RESISTANCE
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the oppostion to the flow of electrons through a conductor.
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